Identification (RFID) Presentation
April 1, 2004
Fast Facts about
RFID and EMF
- RFID stands for radio frequency identification.
- EMF stands for electromagnetic fields.
- Radio frequency is a type of electromagnetic field made of
- Electromagnetic fields are made of electric and magnetic
- Electromagnetic fields are present everywhere on the
- Sources of electromagnetic fields include the sun,
thunderstorms, household appliances, cellular phones, and more.
- Electromagnetic fields are defined by their frequency and
- Wavelength refers to the distance between one wave and the
- Frequency refers to the number of times the energy
vibrates or oscillates.
- The unit of measurement of an electric field is volts per
- The unit of measurement of a magnetic field is a gauss in
the USA and a tesla in Europe.
- The unit of measurement for frequency is a hertz. One
hertz is one cycle per second (1 Hz). 1 kHz (kilohertz) is one thousand
cycles per second. 1 MHz (megahertz) is one million cycles per second. 1
GHz (gigahertz) is one billion cycles per second.
- Radio frequency constitutes one part of the
electromagnetic field range.
- The frequency range of electromagnetic fields runs from 1 Hz-300
- The frequency of the RFID tags that SFPL will use is 13.56